Electro-Dynamic Inverse Method for High-Field RF Transmit Coil Design

Shumin Wang¹, Jeff Duyn, Alan Koretsky

Radio-frequency transmit coils need to produce homogeneous transverse magnetic fields. At low field strengths, this is typically accomplished by birdcage-like transmitters. At high field strengths, it is believed that due to destructive wave interferences, producing homogeneous fields by a single resonator is no longer possible. Here we present a general full-wave electro-dynamic approach that allows one to find the desired current distribution on any surfaces that generate homogeneous filed distributions on any specified locations inside a human-shaped phantom.